Abstract: An inking and coloring device for a printer has a pair of ink supply rollers, a pair of ink transfer rollers, a printing drum, a cam arm and a drive device. Each of the ink transfer rollers are movable between a first position in which the ink transfer rollers contact a respective ink supply roller and a second position for transferring ink to the printing drum. Each of the ink transfer rollers are connected to a respective cam roller operable by the cam arm. The drive device causes the cam arm to move in a reciprocal manner, thereby causing each cam roller to move a respective ink transfer roller between its first and second positions. The arrangement is such that when one ink transfer roller is in the first position, the other is in the second position and, vice versa. The printing drum is reciprocally movable between the ink transfer rollers simultaneously with the movement of the said cam arm.

Abstract: Apparatus for affecting positional adjustment of a machine member has an adjustment screw nonrotatably connected to the machine member and screwed into a nut formed as a worm wheel. The worm wheel, meshes with a worm, connected by a worm shaft to an actuator assembly for rotating the worm. The worm shaft is rotatably and axially displaceably mounted in a housing in which the worm wheel is rotatably mounted and the worm shaft is rotatably and axially non-displaceably mounted in a slider, which is guided in the housing for movement in the axial direction of the worm shaft. The slider is reciprocable by a fluid-operable piston-cylinder unit to an extent which corresponds to the desired adjustment of the screw.

Abstract: A device for engaging form rollers in an inking unit of a printing machine with a plate cylinder of the printing machine and for disengaging the form rollers therefrom, including bearing levers for the form rollers disposed at both side frames of the printing machine, the form rollers being pivotable on bearings of mutually adjacent distributor rollers and being engageable with and disengageable from the plate cylinder by an adjustment element includes at each side frame, a pair of control levers to each of which the two bearing levers, respectively, are articulatingly connected via respective straps, both of the control levers being pivotally mounted on respective stud bolts at the side frames of the machine; a compensating web, respectively, coupling the pair of control levers at each of the side frames; and a respective control cylinder engaging the compensating web and supported on one of the side frames.